Fabric vs Vineflower

Fabric is a free, modular mod loader for Minecraft, with tools for playing and building mods. The Fabric Loader download supplies the basic loader; most mods also need Fabric API in the mods folder for the extra APIs they use. Players can install through options including Minecraft Launcher, Minecraft Server, MultiMC, CurseForge, GDLauncher, ATLauncher, MCUpdater, Technic, portablemc, and Metadata API. For developers, Fabric offers an online template generator, project templates, command-line tools, and an example mod repository. Fabric Loom is a Gradle plugin for developing and debugging mods. Its wider toolchain includes Yarn, open Minecraft mappings offered under CC0; Intermediary, which provides match information for cross-version mods; and Tiny Remapper for JAR files. Documentation covers player installation and troubleshooting as well as developer topics from setup through rendering and networking. Fabric is free, supports Java mods, and is described as mostly version independent. Its site says it is not an official Minecraft product and is not approved by or associated with Mojang.

Vineflower is a free, open-source Java decompiler for producing readable code from Java classes. It supports modern Java, including J21 and later, with automatic reformatting and multithreaded decompilation. The main distribution is a JAR from GitHub releases and Maven Central. You can run that JAR from the command line with archives or files, saving output to an archive or folder or printing it to the console. Vineflower can also be added through Maven or Gradle, and an IntelliJ plugin is available. A command-line option can emit Kotlin classes as Kotlin; the full distribution includes an experimental Kotlin decompiler plugin and other plugins for IntelliJ IDEA annotations and variable renaming. A slim artifact omits built-in plugins. Running requires a Java 17 or newer JVM. An experimental plugin system supports output changes or new JVM languages. The project calls itself a work in progress and welcomes contributions. It is licensed under Apache-2.0.